1.5mm 14k Gold Hollow Belcher Rolo Chain Necklace Extender and Safety Chain, 2.25" Extender Chain with Round Spring Ring Clasp; Inside Dimension of Clasp 1.00 Millimeters, Outside Dimension of Clasp is 4.50 Millimeters Extender-Safety Chain Measures 2.25 Inches Long; 1.50 Millimeters Wide or .059 Inches Also Used as a Safety Chain for Watches, Bracelets and Necklaces Extender-Safety Chain is Crafted in 14k Yellow Gold Made to Order Especially for You, Ships in Approx. 6 Business Days; Made in America